Three devices resembling homemade bombs were discovered outside the high school, post office and public utilities building of the eastern Minnesota town Princeton Wednesday morning, according to the Pioneer Press.

Almost 4,000 students and employees were sent home after their discovery.

Nothing dangerous was found in the bottles, which contained some sort of powder and liquid with wires sticking out, according to the Star Tribune.

"At this point I am guessing that we are dealing with a hoax," Princeton Police Chief Brian Payne said. "But we are still not 100 percent."

Iran's Revolutionary Guard tested missiles with capability to strike Isreal, parts of Europe, and American bases in the Persian Gulf Sunday, according the New York Times.

The tests came only days after President Obama and the leaders of Britain and France criticized that Iran's previously secret nuclear plant breached UN regulations, and only two weeks after President Obama canceled former President George W. Bush's plan for missile defense systems in the Czech Republic and Poland.

Iran said that its nuclear program is for peaceful purposes, but many leaders said they developing a nuclear weapon.

Iran is to hold talks with the UN security council and Germany on Thursday concerning its nuclear program, according to the BBC.

The President of Carleton College will retire in June, according to the Star Tribune.

Robert Oden Jr, 63, has overseen many changes in the school since he took over in 2002, including the addition of two residence halls, the first systematic curriculum review in 50 years, and a fund-raising project that has brought in $235 million so far.

Oden cites a need to spend more time to travel with his wife and a desire to live closer to his children in New Hampshire and New York as reasons for his retirement.

Originally from Vermillion, S.D., Oden served as president of Kenyon College from 1995 to 2002 and as headmaster of Hotchkiss School in Connecticut from1989 to 1995.

The board of trustees will begin looking for Oden's replacement within the next few weeks, according to the Pioneer Press.

In his first speech at the UN General Assembly, President Obama urged for international unity Wednesday, according to the BBC.

Speaking in front of representatives from over 120 countries, the president said that America alone can not succeed in tackling the world's problems.

"Those who chastise America for acting alone in the world cannot now stand by and wait for America to solve the world's problems alone," he said

Among the problems the president included in his call for international cooperation were Middle East peace, nuclear non-proliferation, climate change and poverty in developing countries, according to the Guardian.

The speech differed from former President George W. Bush's talks on unilateral action, which were not popular with UN delegates.

President Obama announced that his administration is ditching plans for missile defense bases in Poland and the Czech Republic.

Vladimir Putin has hailed the decision, calling it "brave" on the part of the U.S.

The old plan, proposed by former President George W. Bush, was unpopluar with Russia because it was seen as a threat to Russia's security.

The new plan focuses on using a more efficient system to protect the U.S. and its allies from possible medium and short-range attacks, rather than long-range attacks from Iran according to the New York Times.

President Obama said that Iran has made significant progress in creating a nuclear weapon recently, but Russia has stood firm in its decision not impose sanctions against them.

The move has drawn criticism from republicans, including Sen. John McCain, who claim that it will empower Russia and Iran, according to the Guardian.